Crystallographically textured Ba0.8La0.2Fe11.8-xCu0.2O19-δ hexaferrites with narrow FMR linewidth. Issue 7 (May 2020)

• Record Type: Journal Article
• Authors: Wu, Chuanjian; Li, Jinpeng; Lan, Zhongwen; Yu, Zhong; Jiang, Xiaona; Guo, Rongdi; Luo, Quanbang; Sun, Ke
• Is Part Of: Ceramics international. Volume 46:Issue 7(2020)
• Page Start: 8719
• Page End: 8724
• Publication Date: 2020-05
• Subjects: Barium hexaferrites -- Iron deficiency -- Anisotropy field -- FMR linewidth; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2019.12.110
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: M-type hexaferrites which exhibit strong uniaxial anisotropy field, are promising for the applications in self-biased microwave and millimeter wave (MMW) devices. Here we demonstrate crystallographically textured hexaferrites with narrow ferromagnetic resonance (FMR) linewidth synthesized by the conventional ceramic method. Meanwhile, the relationship between iron-deficiency content and microstructure, crystallographic, and magnetic properties are researched. These hexaferrites have strong remanence ratio of above 0.9 along c -axis. By fitting of Lorentzian function to absorption derivative, we probe detailedly into the zero-field FMR linewidth of Ba0.8 La0.2 Fe11.8- x Cu0.2 O19-δ hexaferrites. When x equals 1.0, it indicates the narrowest FMR linewidth of 324Oe, as compared with previous reports for crystallographically textured hexaferrites.